VYPR
← All advisories
Unrated severityNVD Advisory· Published Dec 3, 2025· Updated Dec 3, 2025

Cal.com Authentication Bypass via bad TOTP + password checks

CVE-2025-66489

Description

Cal.com is open-source scheduling software. Prior to 5.9.8, A flaw in the login credentials provider allows an attacker to bypass password verification when a TOTP code is provided, potentially gaining unauthorized access to user accounts. This issue exists due to problematic conditional logic in the authentication flow. This vulnerability is fixed in 5.9.8.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Calcom/Cal.comllm-fuzzy2 versions
    <5.9.8+ 1 more
    • (no CPE)range: <5.9.8
    • (no CPE)range: < 5.9.8

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.